林产工业

为探析本地区景观木结构建筑表面的风化特征，本研究通过对景观木结构建筑的外观形貌进行观测比对，归纳了风化表征的常见类型，并针对色彩变化和表面开裂现象进行了表征量化及相关分析。结果表明：1)风化表征主要体现为建筑表面的变色、开裂、掉皮以及风蚀磨损等现象。2)基于CIE Lab色彩系统，室外侧的明度大于内侧，且外侧表面色彩发白。门板正面的红色度明显小于背面，同时黄色度变化程度大且有明显的分散趋势。3)以檐柱为考察样本，其裂缝走向以WS、W为主。裂缝几乎都为直立缝，且裂缝倾角分布具有一致性。E向、ES向的裂缝密度较大，裂缝开度、长度的变化与密度变化的趋势大致吻合。

In order to explore the weathering characteristics of the surface of landscape timber structure buildings in local area, through observing and comparing the appearance of landscape timber buildings, the common types of weathering characterization were summarized, and the color change and surface cracking phenomena were quantified and analyzed. The results showed that:1) The characteristics of weathering were mainly reflected in the discoloration, cracking, peeling and wind erosion on the building surface. 2) Based on the CIE Lab color system, the brightness of the outside was greater than that of the inside, and the color of the outside surface was light. The redness of the front side of the door panel was obviously less than that of the backside.At the same time, the degree of yellow color changed greatly and had an obvious dispersion trend. 3) Taking the peripheral columns as the investigation sample, the crack trend was mainly WS and W. Almost all cracks were vertical fractures, and the distribution of crack dip angles was consistent. The density of cracks in E and ES directions was larger, and the change of crack aperture and longitudinal length roughly coincided with the trend of density change.