闽浙木拱廊桥泄洪系统的设计

Design of Flood Discharge System of Timber Arch Lounge Bridges in Fujian and Zhejiang

我国闽浙地区的木拱廊桥有着极高的美学与建筑价值.但诸多案例证实,洪涝灾害对于木质拱桥的破坏十分严重.据此对浙西南山区古建筑木拱廊桥进行了研究,从造型及结构角度出发,探究古代工匠在古廊桥防洪系统上的建筑智慧,并通过木拱廊桥毁于洪灾的典型案例,分析木质拱桥在洪涝灾害作用下的破坏机理.提出具有泄洪系统的古建筑廊桥的技术方案,不仅可以有效地起到泄洪的作用,而且可以减小对风的阻力,提高整个廊桥的稳定性,同时可以收集雨水,天气炎热时雨水蒸发吸热,起到降低温度的作用.

China has a history of thousands of years. Many buildings left over by history have extremely high aesthetic and architectural values. The timber arch lounge bridge in Fujian and Zhejiang is one of the representatives. The ancients used their intelligence to build arch bridges over rivers with wood. At the same time,a promenade was built on the bridge. The number of lounge bridges in China is the largest in the world,and its preservation is relatively complete. However,many cases prove that the damage of flood to timber arch lounge bridge is serious. The paper studies ancient wooden arch bridges in the mountainous areas of southwestern Zhejiang,and explores the architectural wisdom of ancient craftsmen in flood control by timber arch lounge bridges. It also analyzes the typical cases destroyed in floods and the failure mechanism of the flood disaster. The technical ideas on protection and stability for timber arch lounge bridges are put forward.