A tapered beam element model is used to simulate the behaviour of an arch structure under loading.
采用较为简单的梯形梁单元分析圬工拱形建筑结构受荷载作用的力学性能。
An arch is structurally of much greater strength than corresponding beam and column construction, and thus accommodates a greater span.
拱在结构上比梁柱结构要有力的多，因而能合适更大的跨度。
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