Abstract
The timber arch lounge bridge is a special type of Chinese architectural heritage that is widely distributed in the southern Zhejiang Province and the northern Fujian Province. The precondition of planning the preventive conservation of built cultural heritage is the reliable evaluation of the structure safety, which enables the planners or decision-makers to comprehensively understand the complex damaged situation of the bridge and figure out a grading system for the bridge safety state. This paper puts forward a universal safety evaluation method for ancient Chinese timber arch lounge bridges. Special stress is given to the weight assignments during the procedure. Moreover, following the proposed evaluation method a case study of Wenxing Bridge is conducted, which could give a better insight into the evaluating process. This study contributes to a step forward, from the qualitative cognition to the quantitative assessment, on the way of evaluating the structure safety condition of ancient Chinese timber arch lounge bridges.
Highlights
The timber arch lounge bridge, one type of China’s national cultural heritage, refers to the type of bridge with a covered timber lounge house or corridor built on the timber member-weaving arch system
Distinguished from the previous methods of the structural safety evaluation for traditional Chinese timber buildings, including the widely used Analytic Hierarchy Process (AHP) with Delphi model [22, 23] and attribute recognition [24], this study proposed a method based on Set Pair Analysis (SPA), by which a set of connection number formula is established so as to take full advantage of the collective information from the structure to be evaluated
The repair should start from the member assemblies that are in Grade 5 and to the Grade 4
Summary
The timber arch lounge bridge, one type of China’s national cultural heritage, refers to the type of bridge with a covered timber lounge house or corridor built on the timber member-weaving arch system This special type of timber bridges in China originating in the Northern Song Dynasty (960–1127A.D.) and mainly distributed in the southern Zhejiang Province and northern Fujian Province along China’s south east coast. The construction of these bridges relies on the skilled craftsmanship with a woodworking master directing the carpentry of a team of woodworkers, since the bridges were entirely constructed by hand.
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