科技节上演“最强承重挑战”
当裁判员将砝码一公斤一公斤地加上去时，全场鸦雀无声。最终，这座小桥成功承载了超过40公斤的重量，依然稳如泰山，令不少成年观众看得目瞪口呆。
小小火柴桥，藏着大科学
别看这桥个头小，它背后可蕴含着丰富的工程力学知识：
结构设计：学生需要运用三角形稳定原理、拱形受力分散等知识，合理布局桥梁结构；
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